2009 INFINITI QX56 brake sensor

SYSTEM SYMPTOMTM-161
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
25
Slips/Will
Not en-
gage Does not hold lock-up
condition.
Refer to
TM-140, "A/T
Does Not Hold Lock-
up Condition". ON vehicle 1. Fluid level and state
TM-179
2. Line pressure testTM-188
3. Engine speed signal TM-52
4. Input speed sensorTM-47
5. Torque converter clutch solenoid valveTM-64
6. CAN communication line LAN-4
7. Control valve with TCMTM-203
OFF vehicle8. Torque converter
TM-2039. Oil pump assemblyTM-203
26Lock-up is not re-
leased.
Refer to
TM-141,
"Lock-up Is Not Re-
leased". ON vehicle1. Fluid level and state
TM-179
2. Line pressure testTM-188
3. Engine speed signal TM-52
4. Input speed sensorTM-47
5. Torque converter clutch solenoid valveTM-64
6. CAN communication line LAN-4
7. Control valve with TCMTM-203
OFF vehicle8. Torque converter
TM-2039. Oil pump assemblyTM-203
27No shock at all or the
clutch slips when vehi-
cle changes speed D1
→
D2. ON vehicle
1. Fluid level and state
TM-179
2. Output speed sensor and vehicle speed signal TM-49,
TM-74
3. Direct clutch solenoid valve TM-84
4. CAN communication line LAN-4
5. Line pressure testTM-188
6. Control valve with TCMTM-203
OFF vehicle7. Torque converter
TM-203
8. Oil pump assemblyTM-203
9. 3rd one-way clutchTM-203
10. Gear systemTM-203
11. Direct clutchTM-203
12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9TM-203
No. Items Symptom Condition Diagnostic Item Reference
page
Revision: December 20092009 QX56

TM-162
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
28Slips/Will
Not en-
gage No shock at all or the
clutch slips when vehi-
cle changes speed D2
→
D3. ON vehicle
1. Fluid level and state
TM-179
2. Output speed sensor and vehicle speed signal TM-49,
TM-74
3. High and low reverse clutch solenoid valve TM-86
4. CAN communication line LAN-4
5. Line pressure testTM-188
6. Control valve with TCMTM-203
OFF vehicle7. Torque converter
TM-203
8. Oil pump assemblyTM-203
9. 3rd one-way clutchTM-203
10. Gear systemTM-203
11. High and low reverse clutchTM-203
12. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9
TM-203
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9TM-203
29 No shock at all or the
clutch slips when vehi-
cle changes speed D3
→
D4. ON vehicle
1. Fluid level and state
TM-179
2. Output speed sensor and vehicle speed signal TM-49,
TM-74
3. Input clutch solenoid valve TM-80
4. Front brake solenoid valveTM-82
5. CAN communication line LAN-4
6. Line pressure testTM-188
7. Control valve with TCMTM-203
OFF vehicle8. Torque converter
TM-203
9. Oil pump assemblyTM-203
10. Input clutchTM-203
11. Gear systemTM-203
12. High and low reverse clutchTM-203
13. Direct clutchTM-203
No. Items Symptom Condition Diagnostic Item Reference
page
Revision: December 20092009 QX56

SYSTEM SYMPTOMTM-163
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P30
Slips/Will
Not en-
gage No shock at all or the
clutch slips when vehi-
cle changes speed D4
→
D5. ON vehicle
1. Fluid level and state
TM-179
2. Output speed sensor and vehicle speed signal TM-49,
TM-74
3. Front brake solenoid valve TM-82
4. Direct clutch solenoid valveTM-84
5. CAN communication line LAN-4
6. Line pressure testTM-188
7. Control valve with TCMTM-203
OFF vehicle8. Torque converter
TM-203
9. Oil pump assemblyTM-203
10. Front brake (brake band)TM-203
11. Input clutchTM-203
12. Gear systemTM-203
13. High and low reverse clutchTM-203
31When you press the
accelerator pedal and
shift speed D5→
D4
the engine idles or the
transmission slips. ON vehicle
1. Fluid level and state
TM-179
2. Output speed sensor and vehicle speed signal TM-49,
TM-74
3. Front brake solenoid valve TM-82
4. Direct clutch solenoid valveTM-84
5. CAN communication line LAN-4
6. Line pressure testTM-188
7. Control valve with TCMTM-203
OFF vehicle8. Torque converter
TM-203
9. Oil pump assemblyTM-203
10. Input clutchTM-203
11. Gear systemTM-203
12. High and low reverse clutchTM-203
13. Direct clutchTM-203
No. Items Symptom Condition Diagnostic Item Reference
page
Revision: December 20092009 QX56

TM-164
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
32Slips/Will
Not en-
gage When you press the
accelerator pedal and
shift speed D4→
D3
the engine idles or the
transmission slips. ON vehicle
1. Fluid level and state
TM-179
2. Output speed sensor and vehicle speed signal TM-49,
TM-74
3. Input clutch solenoid valve TM-80
4. Front brake solenoid valveTM-82
5. CAN communication line LAN-4
6. Line pressure testTM-188
7. Control valve with TCMTM-203
OFF vehicle8. Torque converter
TM-203
9. Oil pump assemblyTM-203
10. 3rd one-way clutchTM-203
11. Gear systemTM-203
12. High and low reverse clutchTM-203
13. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9
TM-203
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9TM-203
33 When you press the
accelerator pedal and
shift speed D3→
D2
the engine idles or the
transmission slips. ON vehicle
1. Fluid level and state
TM-179
2. Output speed sensor and vehicle speed signal TM-49,
TM-74
3. High and low reverse clutch solenoid valve TM-86
4. Direct clutch solenoid valveTM-84
5. CAN communication line LAN-4
6. Line pressure testTM-188
7. Control valve with TCMTM-203
OFF vehicle8. Torque converter
TM-203
9. Oil pump assemblyTM-203
10. 3rd one-way clutchTM-203
11. Gear systemTM-203
12. Direct clutchTM-203
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9TM-203
No. Items Symptom Condition Diagnostic Item Reference
page
Revision: December 20092009 QX56

SYSTEM SYMPTOMTM-165
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
34
Slips/Will
Not En-
gage When you press the
accelerator pedal and
shift speed D2→
D1
the engine idles or the
transmission slips. ON vehicle
1. Fluid level and state
TM-179
2. Output speed sensor and vehicle speed signal TM-49,
TM-74
3. Direct clutch solenoid valve TM-84
4. CAN communication line LAN-4
5. Line pressure testTM-188
6. Control valve with TCMTM-203
OFF vehicle7. Torque converter
TM-203
8. Oil pump assemblyTM-203
9. 3rd one-way clutchTM-203
10. 1st one-way clutchTM-203
11. Gear systemTM-203
12. Reverse brakeTM-203
13. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9
TM-203
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9TM-203
35 With selector lever in
“D” position, accelera-
tion is extremely poor. ON vehicle
1. Fluid level and state
TM-179
2. Line pressure testTM-188
3. Accelerator pedal position sensor TM-70
4. CAN communication line LAN-4
5. Transmission range switchTM-44
6. Control cable adjustmentTM-195
7. Control valve with TCMTM-203
OFF vehicle8. Torque converter
TM-232
9. Oil pump assemblyTM-203
10. 1st one-way clutchTM-203
11. Gear systemTM-203
12. Reverse brakeTM-203
13. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9
TM-203
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9TM-203
No. Items Symptom Condition Diagnostic Item Reference
page
Revision: December 20092009 QX56

TM-166
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
36Slips/Will
Not En-
gage With selector lever in
“R” position
, accelera-
tion is extremely poor. ON vehicle1. Fluid level and state
TM-179
2. Line pressure testTM-188
3. Accelerator pedal position sensor TM-70
4. High and low reverse clutch solenoid valve LAN-4
5. CAN communication lineLAN-4
6. Transmission range switchTM-44
7. Control cable adjustmentTM-195
8. Control valve with TCMTM-203
OFF vehicle9. Gear system
TM-20310. Output shaftTM-203
11. Reverse brakeTM-203
37While starting off by
accelerating in 1st, en-
gine races or slippage
occurs. ON vehicle
1. Fluid level and state
TM-179
2. Line pressure testTM-188
3. Accelerator pedal position sensor TM-70
4. CAN communication line LAN-4
5. Control valve with TCMTM-203
OFF vehicle6. Torque converter
TM-203
7. Oil pump assemblyTM-203
8. 3rd one-way clutchTM-203
9. 1st one-way clutchTM-258
10. Gear systemTM-203
11. Reverse brakeTM-203
12. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9
TM-203
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9TM-203
38 While accelerating in
2nd, engine races or
slippage occurs. ON vehicle
1. Fluid level and state
TM-179
2. Line pressure testTM-188
3. Accelerator pedal position sensor TM-70
4. CAN communication line LAN-4
5. Direct clutch solenoid valveTM-84
6. Control valve with TCMTM-203
OFF vehicle7. Torque converter
TM-203
8. Oil pump assemblyTM-203
9. 3rd one-way clutchTM-203
10. Gear systemTM-203
11. Direct clutchTM-203
12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9TM-203
No. Items Symptom Condition Diagnostic Item Reference
page
Revision: December 20092009 QX56

SYSTEM SYMPTOMTM-167
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P39
Slips/Will
Not En-
gage While accelerating in
3rd, engine races or
slippage occurs.
ON vehicle
1. Fluid level and state
TM-179
2. Line pressure testTM-188
3. Accelerator pedal position sensor TM-70
4. CAN communication line LAN-4
5. High and low reverse clutch solenoid valveTM-86
6. Control valve with TCMTM-203
OFF vehicle7. Torque converter
TM-203
8. Oil pump assemblyTM-203
9. 3rd one-way clutchTM-203
10. Gear systemTM-203
11. High and low reverse clutchTM-203
12. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9
TM-203
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9TM-203
40 While accelerating in
4th, engine races or
slippage occurs. ON vehicle
1. Fluid level and state
TM-179
2. Line pressure testTM-188
3. Accelerator pedal position sensor TM-70
4. CAN communication line LAN-4
5. Input clutch solenoid valveTM-80
6. Control valve with TCMTM-203
OFF vehicle7. Torque converter
TM-203
8. Oil pump assemblyTM-203
9. Input clutchTM-203
10. Gear systemTM-203
11. High and low reverse clutchTM-203
12. Direct clutchTM-203
No. Items Symptom Condition Diagnostic Item Reference
page
Revision: December 20092009 QX56

TM-168
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
41Slips/Will
Not En-
gage While accelerating in
5th, engine races or
slippage occurs.
ON vehicle
1. Fluid level and state
TM-179
2. Line pressure testTM-188
3. Accelerator pedal position sensor TM-70
4. CAN communication line LAN-4
5. Front brake solenoid valveTM-82
6. Control valve with TCMTM-203
OFF vehicle7. Torque converter
TM-203
8. Oil pump assemblyTM-203
9. Front brake (brake band)TM-203
10. Input clutchTM-203
11. Gear systemTM-203
12. High and low reverse clutchTM-203
42 Slips at lock-up.ON vehicle1. Fluid level and state
TM-179
2. Line pressure testTM-188
3. Engine speed signal TM-52
4. Input speed sensorTM-47
5. Torque converter clutch solenoid valveTM-64
6. CAN communication line LAN-4
7. Control valve with TCMTM-203
OFF vehicle8. Torque converter
TM-2039. Oil pump assemblyTM-203
43No creep at all.
Refer to
TM-124, "Ve-
hicle Does Not Creep
Backward in "R" Posi-
tion", TM-126, "Vehi-
cle Does Not Creep
Forward in "D" Posi-
tion"
ON vehicle 1. Fluid level and state
TM-179
2. Line pressure testTM-188
3. Accelerator pedal position sensor TM-70
4. Direct clutch solenoid valveTM-84
5. Transmission range switchTM-44
6. CAN communication line LAN-4
7. Control cable adjustmentTM-195
8. Control valve with TCMTM-203
OFF vehicle9. Torque converter
TM-203
10. Oil pump assemblyTM-203
11. 1st one-way clutchTM-203
12. Gear systemTM-203
13. Reverse brakeTM-203
14. Direct clutchTM-203
15. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9
TM-203
16. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9TM-203
No. Items Symptom Condition Diagnostic Item Reference
page
Revision: December 20092009 QX56